Ray wanted to find out if the color of paper determines how fast it burns. In order to find out, he bought three sheets of typing paper, all the same size, made of the same materials, but in different colors. He then burned each sheet to see which one burned fastest. In this experiment, the color of the paper is the . A) independent variable
B) dependent variable
C) constant

Afood web shows who eats who in any given habitat. every living thing, from one-celled algae to giant blue whales, needs food to survive. each food web is a possible pathway that energy and matter can follow through the habitat. a food web begins with producers: organisms that convert sunlight into usable chemical energy. the food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers. in this food web, identify the decomposer.

Late at night some traffic signals change patterns and become ?

What are the three stages of volcanic activity? a. active, magma, lava c. extinct, eruption, explosive b. eruption, quiet, explosive d. active, dormant, extinct